Anti-spyware scan freezes at 99%

Hello:

As of last night, an AS scan freezes at exactly the same point in the scan. It's at 99% through the scan. The malware its scanning for at the time of the freeze is named something like: &quot;W32.lancasterst&quot;.

Taskmanager shows ZA Scan and ZA not responding and I need to reboot after killing the task in order to get the zone alarm program back.